/*****************************************************************************
 * Copyright (C) Codehaus.org                                                *
 * ------------------------------------------------------------------------- *
 * Licensed under the Apache License, Version 2.0 (the "License");           *
 * you may not use this file except in compliance with the License.          *
 * You may obtain a copy of the License at                                   *
 *                                                                           *
 * http://www.apache.org/licenses/LICENSE-2.0                                *
 *                                                                           *
 * Unless required by applicable law or agreed to in writing, software       *
 * distributed under the License is distributed on an "AS IS" BASIS,         *
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  *
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package com.googlecode.lazyparsec.error;

/**
 * Represents a line and column number of a character or token in the source.
 *
 * @author Ben Yu
 */
public final class Location {

    /**
     * 1-based line number.
     */
    public final int line;

    /**
     * 1-based column number.
     */
    public final int column;

    /**
     * Creates a {@link Location} instance.
     *
     * @param line   line number
     * @param column column number
     */
    public Location(int line, int column) {
        this.line = line;
        this.column = column;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof Location) {
            Location other = (Location) obj;
            return line == other.line && column == other.column;
        }
        return false;
    }

    @Override
    public int hashCode() {
        return line * 31 + column;
    }

    @Override
    public String toString() {
        return "line " + line + " column " + column;
    }
}
